一 . 冠词的用法

     冠词是虚词,放在名词之前,用来说明名词指的人或事物。冠词有两种。 a(an) 叫不定冠词, the 叫定冠词。 a 用在辅音之前, an 用在元音之前。

1. 不定冠词的用法

(1) a 和 an 均用在单数名词之前,表示某一类人或事物。例如: 

John is a student. Mary is an English teacher.

(2) 指某一类人或事物中的任何一个。例如 :

A steel worker makes steel.

Pass me an apple, please.

(3) 指某人或某物,但不具体说明何人或和物。例如:

A student wants to see you.

A girl is waiting for you outside.

(4) 表示 “ 每一 ” 的意思,相当于 every 。例如:

Take the medicine three times a day.

They go to see their parents once a week.

2. 定冠词用法

(1) 特指某(些)人或某(些)事物。例如:

The book on the desk is an English dictionary.

Beijing is the capital of China .

(2) 指说话人和听话人都熟悉的人或事物。例如:

Open the door, please.

Jack is in the library.

(3) 上文提到过的人或事物。例如:

Yesterday John's father bought him a new bike. The bike cost him 200 yuan.

(4) 表示世界上独一无二的事物。例如:

The sun rises in the east and sets in the west.

(5) 用在序数词和形容词最高级之前。例如:

Shanghai is the biggest city in China .

January is the first month of the year.

(6) 用在某些形容词之前,表示某一类人或事物。例如:

The nurse is kind to the sick.

We should take good care of the old.

(7) 用在某些专有名词之前和某些习惯用语中。例如:

the Great Wall, the Summer palace, in the morning, in the open air 等。

(8) 用在姓氏复数之前,表示 “ 某某一家人 ” , “ 某某夫妇 ” 。例如:

the Browns, the whites 等。

3. 不用冠词的情况

(1) 某些专有名词,抽象名词和物质名词前一般不用冠词。例如:

China, Canada, Japanese, glass, water, love 等。

(2) 名词前已有作定语用的 this, that, my, your, whose, some, any, no, each, every 等代词时,不用冠词。例如:

That is my cap.

I have some questions.

Go down this street.

(3) 复数名词表示一类人或事物时,不用冠词。

They are workers.

We are students.

(4) 称呼语前不用冠词,表示头衔和职务的名词前也不加冠词。例如:

I don't feel well today, Mother.

Bush was made president of the U.S.

(5) 三餐饭的名称前,球类活动,学科和节目名词前,常不用冠词。例如:

I have lunch at home.

He often plays football after class.

We have English and maths every day.

(6) 在某些固定词组里,名词之前常不用冠词。例如:

By air, at night, at home, go to bed, go to school, on foot, from morning till night 等。